CAIRO — Egypt's national carrier says it has suspended its flights from Cairo for 12 hours.EgyptAir's announcement follows a government-imposed curfew from 6 pm to 7 am in response to widespread demonstrations and rioting that engulfed the Egyptian capital after Friday prayers.The company said its flights from abroad will be able to land, but departures were canceled from 9 pm.Separately, a Cairo Airport official said a number of international airlines had canceled flights to the capital, at least overnight. The official was not authorized to speak to the media and spoke on condition of anonymity.